张文伟;

• 1:中国石油辽河油田分公司勘探开发研究院

摘要(Abstract)：

为明确大民屯凹陷安福屯地区沈352井沙四下亚段细粒沉积岩的沉积环境及演化特征,利用地球化学方法,根据岩石中w(V)/w(V+Ni)判断氧化还原环境的变化,根据w(Sr)/w(Ba)、w(V/)w(Ni)、w(Mg)/w(Ca)判断沉积环境中盐度的变化,根据w(Zr)/w(Al)及w(Al2O3)、w(K2O)、w(TiO2)、w(P2O5)、w(V)判断水体深度的变化,根据w(Sr)/w(Cu)、c(为几种元素的比值)判断沉积环境的古气候变化,分析研究区沉积环境特征及变化规律。结果表明:处于陆相沉积环境的沈352井沙四下亚段由深到浅分为三部分,即在3 280~3 352m处为还原—弱还原环境,盐度为半咸水—咸水,水体较深,属于半潮湿—半干燥气候;在3 248~3 280m处为弱还原环境,盐度为咸水,水体较浅,属于干热气候;在3 169~3 248m处为还原环境,盐度为咸水—半咸水,水体较深,属于温湿气候;其中粒屑发育段(3 328~3 333m)较为特殊,为氧化环境,盐度为微咸水,水体较浅,属于干热气候。该研究对分析研究区细粒沉积岩形成时的沉积环境及勘探潜力具有一定参考意义。

关键词(KeyWords)：细粒沉积岩;沉积环境;主(微)量元素;沙四下亚段;沈352井;大民屯凹陷

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2016ZX05006-005-002)

作者(Author):张文伟;

Email:

参考文献(References)：

• [1]彭海艳,陈洪德,向芳,等.微量元素分析在沉积环境识别中的应用——以鄂尔多斯盆地东部二叠系山西组为例[J].新疆地质,2006,24(2):202-205.Peng Haiyan,Chen Hongde,Xiang Fang,et al.Application of trace elements analysis on sedimentary environment identification:An example from the Permian Shanxi formation in eastern Ordos basin[J].Xingjiang Geology,2006,24(2):202-205.

• [2]汪凯明,罗顺社.碳酸盐岩地球化学特征与沉积环境判别意义——以冀北坳陷长城系高于庄组为例[J].石油与天然气地质,2009,30(3):343-349.Wang Kaiming,Luo Shunshe.Geochemical characters of carbonates and indicative significance of sedimentary environment:An example from the Gaoyuzhuang formation of the Changcheng system in the northern Hebei depression[J].Oil&Gas Geology,2009,30(3):343-349.

• [3]周动力,董青松.黑龙江宁安盆地古近系油页岩沉积环境分析[J].东北石油大学学报,2014,38(1):25-30.Zhou Dongli,Dong Qingsong.Analysis of sedimentary environment of palaeogene oil shale in Heilonjiang Ning'an basin[J].Journal of Northeast Petroleum University,2014,38(1):25-30.

• [4]余烨,张昌民,李少华等.惠州凹陷珠江组泥岩地球化学特征及其地质意义[J].中国石油大学学报:自然科学版,2014,38(1):41-49.Yu Ye,Zhang Changmin,Li Shaohua,et al.Geochemical characteristics and geological significance of mudstones from Zhujiang formation of Huizhou depression[J].Journal of China University of Petroleum:Edition of Natural Science,2014,38(1):41-49.

• [5]王淑芳,董大忠,王玉满,等.四川盆地南部志留系龙马溪组富有机质页岩沉积环境的元素地球化学判别指标[J].海相油气地质,2014,19(3):27-34.Wang Shufang,Dong Dazhong,Wang Yuman,et al.Geochemistry evaluation index of redox-sensitive elements for depositional environments of Silurian Longmaxi organic-rich shale in the south of Sichuan basin[J].Marine Origin Petroleum Geology,2014,19(3):27—34.

• [6]宋璠,杨少春,苏妮娜,等.准噶尔盆地春风油田沙湾组沉积相新认识[J].石油实验地质,2013,35(3):238-242.Song Fan,Yang Shaochun,Su Ni'na,et al.New understanding of sedimentary facies of Shawan formation in Chunfeng oilfield,Junggar basin[J].Petroleum Geology&Experiment,2013,35(3):238-242.

• [7]王勇,宋国奇,刘惠民,等.济阳坳陷细粒沉积岩形成环境及沉积构造[J].东北石油大学学报,2015,39(3):7-14.Wang Yong,Song Guoqi,Liu Huimin,et al.Formation environment and sedimentary structures of fine-grained sedimentary rock in Jiyang depression[J].Journal of Northeast Petroleum University,2015,39(3):7-14.

• [8]王丹,陈永成,潘克,等.大民屯凹陷沙四段沉积体系特征及展布[J].特种油气藏,2007,14(2):37-39.Wang Dan,Chen Yongcheng,Pan Ke,et al.S4sedimentary system and its distribution in Damintun depression[J].Special Oil and Gas Reservoirs,2007,14(2):37-39.

• [9]朱华钰,喻梓靓.大民屯凹陷中部沙四段沉积体系研究[J].石油天然气学报,2013,35(4):11-16.Zhu Huayu,Yu Ziliang.On the sedimentary system of Es4in Damintun sag[J].Journal of Oil and Gas Technology,2013,35(4):11-16.

• [10]尹宏,代宗仰,郭伟,等.大民屯凹陷西部斜坡带沙四段成藏条件分析[J].断块油气田,2006,13(6):4-6.Yin Hong,Dai Zongyang,Guo Wei,et al.Analysis of hydrocarbon a ccumulation condition of the fourth section of Shahejie formation in western slope zone of Damintun depression[J].Fault-Block Oil&Gas Field,2006,13(6):4-6.

• [11]谢文彦,姜建群,张占文,等.大民屯凹陷油气系统研究[J],石油勘探与开发,2004,31(2):38-42.Xie Wenyan,Jiang Jianqun,Zhang Zhanwen,et al.The petroleum system in the Damingtun sag,Liaohe oilfield[J].Petroleum Exploration and Development,2004,31(2):38-42.

• [12]倪春华,周小进,王果寿,等.鄂尔多斯盆地南缘平凉组烃源岩沉积环境与地球化学特征[J].石油与天然气地质,2011,32(1):38-46.Ni Chunhua,Zhou Xiaojin,Wang Guoshou,et al.Sedimentary environment and geochemical characteristics of hydrocarbon source rocks in the Pingliang formation,southern margin of the Ordos basin[J].Oil&Gas Geology,2011,32(1):38-46.

• [13]Ricardo Prego,Migue Caetano,Carlos Vale,et al.Rare earth elements in sediments of the Vigo Ria,Nw Iberian peninsula[J].Continental Shelf Research,2009,29(7):895-902.

• [14]张晓龙,冀华丽,李媛姝,等.微量元素分析在南堡凹陷南部的应用[J].特种油气藏,2015,22(2):67-69.Zhang Xiaolong,Ji Huali,Li Yuanshu,et al.Application of analysis on trace elements in sedimentary environment,southern Nanpu sag[J].Special Oil and Gas Reservoirs,2015,22(2):67—69.

• [15]苗建宇.新疆北部主要盆地二叠系烃源岩沉积环境与生烃特征[D].西安:西北大学,2001.Miao Jianyu.The depositional environment of Permian system hydrocarbon source rocks and its potential hydrocarbon generating characteristics in major basins in north Xinjiang[D].Xi'an:Northwest University,2001.

• [16]辛补社,杨华,付金华,等.鄂尔多斯盆地南部晚三叠世泥岩微量元素地球化学特征[J].北京师范大学学报:自然科学版,2013,49(1):57—60.Xin Bushe,Yang Hua,Fu Jinhua,et al.Geochemical characteristics of trace elements in Triassic mudstone in the upper Ordos basin[J].Journal of Beijing Normal University:Natural Science,2013,49(1):57-60.

• [17]李婧婧,陶树,刘晓华.博格达山北油页岩元素地球化学特征及沉积环境指示意义[J].洁净煤技术,2012,18(1):109-112.Li Jingjing,Tao Shu,Liu Xiaohua.Element geochemical characteristics and implications on sedimentary environments of southern Bogda mountain oil shale[J].Clean Coal Technology,2012,18(1):109-112.

• [18]郑荣才,柳梅青.鄂尔多斯盆地长6油层组古盐度研究[J].石油与天然气地质,1999,20(1):20-25.Zheng Rongcai,Liu Meiqing.Study on palaeosalinity of chang6oil reservoir set in Ordos basin[J].Oil&Gas Geology,1999,20(1):20-25.

• [19]钟福平,钟建华,由伟丰,等.贺兰山汝箕沟三叠纪钙质结核特征及环境意义[J].东北石油大学学报,2011,35(1):26-29.Zhong Fuping,Zhong Jianhua,You weifeng,et al.Characteristics and environmental significance of the calcareous coneretions in Rujigou of Hela mountain[J].Journal of Northeast Petroleum University,2011,35(1):26-29.

• [20]毛小妮,周立发,杨甫,等.鄂尔多斯盆地西南缘奥陶系地球化学特征与沉积环境分析[J].地质科技情报,2011,30(3):98-102.Mao Xiaoni,Zhou Lifa,Yang Fu,et al.Geochemical characteristics and its sedimentary environment significance of the Ordovician in the southwestern margin of Ordos basin[J].Geological Science and Technology Information,2011,30(3):98-102.

• [22]倪善芹,侯泉林,王安建,等.碳酸盐岩中锶元素地球化学特征及其指示意义——以北京下古生界碳酸盐岩为例[J].地质学报,2010,84(10):1510-1516.Ni Shanqin,Hou Quanlin,Wang Anjian,et al.Geochemical characteristics of carbonate rocks and its geological implications:Taking the lower Palaeozoic carbonate rock of Beijing area as an example[J].Acta Geologica Sinica,2010,84(10):1510-1516.